Malicious PDF — malware analysis report

Static analysis result for SHA-256 823f97e8432f98ce…

MALICIOUS

PDF

70.6 KB Created: 2021-02-18 00:47:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e816d8d4f24308512e6111070c3f3ff5 SHA-1: f77545e2d15fac2848150776c72bf48ed54252fe SHA-256: 823f97e8432f98cee020a56ead5a0dd2960540c857f3353143f7e73cbb22320e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious URL, likely intended to trick the user into downloading a further payload or visiting a phishing site. The document body, though heavily obfuscated, appears to be a lure related to product searches.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jottigo.ru/wix?keyword=genes+vitamin+e+cream+stores PDF link annotation
    • https://cdn.sqhk.co/loxinesupiva/eidcIsW/23002822670.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378175/normal_5fffe71530e43.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469349/normal_5fdf77ea40464.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465400/normal_601a2a0b42b1a.pdfIn PDF document text
    • https://cdn.sqhk.co/wufevinek/hhaijji/sims_freeplay_cheats_2019_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/xewimoziwuvo/dshb9Jw/dimecuba_customer_service_number.pdfIn PDF document text
    • https://cdn.sqhk.co/dizoketa/dgjgicA/romojefafufetejetotusi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488569/normal_5fdc364076163.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370780/normal_5ff98cc146903.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabalero/ijhicjd/download_bike_unchained_2_mod_apk_unlimited_money.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bimuvugibane.rf.gd/puziroxirilojowaxiz.pdfIn PDF document text
    • http://mafofeguf.epizy.com/speechless_aladdin_choir_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/free_art_gallery_business_plan_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/kubota_rtv_1100_maintenance_kit.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/guzivosavupeboziju.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FF 5004 bytes
SHA-256: 85fe2c203604b51286d9402fbbec1c2b35a9777b156c6af4ad87b5e7d8514764
font_01_sfnt_off0000eaf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF8 10240 bytes
SHA-256: d8ce2f970ca769b5e205b06a364452c903aeb580a7d6df7ac2448044cbf4bf6a